@ DP Man
I totally get where you are getting at. I sometimes have that feeling, but I don't really get depressed or anything or bother writing about it.
Most of the advice the other guys have said works:
I know what you mean though. Its a little funny, I really do not use facebook much, or have any real pictures on my profile..But I see my friends photos and they are like all happy traveling the world, got a cool job or doing something nice. Then you get that thought, I wish I could be doing that right now..
But honestly, images only tell one story or part of their life and it is never good to compare yourself with others. I bet most days, those people are doing every day things.
Something I kind of am figuring out the hard way is, the more I tell myself I am going to do something or "I want to do that".. there really is a good chance I am not going to do it. I tend to procrastinate that because I think of it as a "goal" and goals imply that there is going to be obstacles. The best thing is just to do it without over thinking it.
Another problem I have is often getting out of my old habits. I can do something new and feel great about it, but later my mind reverts back to my old habits. It is very annoying.
As for figuring out what I like to do and what I don't like changes often, but there are things that I find easier to hold interest in than others. I am currently studying Japanese Culture and Language and want to visit Japan, also studying Video Production and learning about filming, editing and audio production. My passion for both of these changes a lot.
Example: I can enjoy a video production class for about 3-4 months, but after that I get bored with it. Patience and Motivation drops.
As much as I do not want to compare age, I am 20 years old, almost 21. Never got laid..Did not touch alcohol or drugs.. do not have much muscles.. I guess we might be similar huh?